CXAR41170是一款高效率，每个通道具有2.5W功率输出的双声道D类音频放大器，它用一种低噪声filterless PWM的架构，无需输出滤波器。电源电压为5V时，CXAR41170能在输出负载为4Ω的扬声器上，单一通道可以输送出2.5W/10%的输出功率及失真度。CXAR41170具有两个独立的关断(Shutdown)控制信号，可以单独关闭左声道或右声道。利用G0与G1两个接脚，可以选择增益为 6、12、18或是24dB。高电源拒斥比(PSRR)以及全差动设计可以有效抑制噪声以及射频(RF)干扰。CXAR41170能够增强3D音效，提高立体声质量。在实际应用上，左右声道非常的靠近，3D enhancement具有扩大并加强不同频带声音效果的功能
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[ CXAR41170 ]
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产品概述 返回TOP
CXAR41170 是一款高效率，每个通道具有2.5W功率输出的双声道D类音频放大器，它用一种低噪声filterless PWM的架构，无需输出滤波器。电源电压为5V时，CXAR41170能在输出负载为4Ω的扬声器上，单一通道可以输送出2.5W/10%的输出功率及失真度。CXAR41170具有两个独立的关断(Shutdown)控制信号，可以单独关闭左声道或右声道。利用G0与G1两个接脚，可以选择增益为 6、12、18或是24dB。高电源拒斥比(PSRR)以及全差动设计可以有效抑制噪声以及射频(RF)干扰。CXAR41170能够增强3D音效，提高立体声质量。在实际应用上，左右声道非常的靠近，3D enhancement具有扩大并加强不同频带声音效果的功能。CXAR41170采用TQFN封装，适合行动电话或是可携式行动通讯系统使用。The CXAR41170 is a high efficiency, 2.5W/channel stereo class-D audio power amplifier. A low noise, filterless PWM architecture eliminates the output filter. Operating from a single 5V supply, CXAR41170 is capable of delivering 2.5W/ channel of continuous output power to a 4Ω load with 10% THD+N. The CXAR41170 features independent shutdown controls for each channel. The gain can be selected to 6, 12, 18, or 24 dB utilizing the G0 and G1 gain select pins. High PSRR and differential architecture provide increased immunity to noise and RF rectification. The CXAR41170 also includes 3D audio enhancement that improves stereo sound quality. In devices where the left and right speakers are in close proximity, 3D enhancement affects channel specialization, widening the perceived soundstage. The CXAR41170 is available in space-saving TQFN package, is an idea choice for mobile phones and other portable communication devices.
产品特点 返回TOP
• 变频调变减少EMI干扰
• 输出功率(TQFN封装):
- 负载4Ω，工作电压5V，单一通道输出功率可达2.5W
- 负载8Ω，工作电压5V，单一通道输出功率可达1.5W
- 负载8Ω，工作电压3.6V，单一通道输出功率可达750mW
• 工作电压2.5V到5.5V
• 左声道或右声道具有单独关断(Shutdown)控制信号
• 增益选择: 6、12、18或是24 dB
• 关断(Shutdown)接脚具有内部下拉电阻(Pulldown Resistor=300kΩ)
• 高PSRR :70dB at 217Hz
• 快速启动时间: 10ms
• 操作电压3.6V时，具有4.7mA 低静态电流以及1.5uA关断电流
• 输出短路以及过热关断保护机制
• 3D Enhancement功能
• Space Saving封装:
- 4mm x 4mm TQFN-24封装
• 符合RoHS规范及Pb-Free
Unique Modulation Scheme Reduces EMI Emission
Output Power By TQFN Package
- 2.5W/Ch Into 4Ω at 5V
- 1.5W/Ch Into 8Ω at 5V
- 750mW/Ch Into 8Ω at 3.6V
Wide Supply Voltage: 2.5V to 5.5V
Independent Shutdown Control for Each Channel
Selectable Gain of 6,12,18 and 24 dB
Internal Pulldown Resistor On Shutdown Pins
High PSRR :70dB at 217Hz
Fast 10ms Startup Time
Low 4.7mA Quiescent Current at 3.6V Supply and
1.5μA Shutdown Current
Short-Circuit and Thermal Protection
3D Enhancement
Space Saving Packages
- 4mm× 4mm TQFN-24 package
RoHS Compliant and 100% Lead(Pb)-Free
应用范围 返回TOP
• 无线或移动电话及PDA
• 可携式音乐拨放器(Portable Audios)
• 笔记本电脑
Wireless or Cellular Handsets and PDAs
Portable Audios
Notebook PC
技术规格书（产品PDF) 返回TOP
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音频放大器 > D类 > D类放大器 |
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Part Number |
remark |
Vin (V) |
Speaker (W) |
Speaker (Ω) |
Headphone |
No of Speaker Channel |
THD +N @ 1KHz (%) |
IQ (mA)(Typ) |
PSRR (dB) |
Package |
|
10-W Inductor Free Stereo Audio Amplifier with Low EMI |
4.5~14.5 |
10 |
8 |
- |
2 |
0.07 |
22 |
60 |
TSSOP-28 |
|
|
2W High Efficiency Mono Class-D Audio Power Amplifier with Non-Clip |
3~5 |
2 |
8 |
N/A |
1 |
0.09 |
9 |
70 |
WCSP-16 |
|
|
2.8W/CH Stereo Filterless Class-D Audio Amplifier with |
2.7~5.5 |
2.8 |
4 |
110mW/32Ω |
2 |
0.2 |
6.5 |
60 |
SOP-24,TQFN-20 |
|
|
2.5W/CH Stereo Filterless Class-D Audio Amplifier with 64-Step DC Volume Control |
2.7~5.5 |
2.5 |
4 |
N/A |
2 |
0.2 |
6.5 |
60 |
SOP-16 |
|
|
3.3W Mono Class-D Audio Power Amplifier with Non-Clip, Power Limit and Noise Gate |
2.5~5.5 |
3.3 |
4 |
N/A |
1 |
0.15 |
4 |
70 |
WCSP-9 |
|
|
2.5-W/CH Stereo Filter-less Class-D Audio Power Amplifier with Auto-Recovery |
2.5 ~ 5.5 |
2.5 |
4 |
N/A |
2 |
0.13 |
6.2 |
63 |
TQFN-20,TSSOP-20 |
|
|
Low EMI, 2.8-W Mono Filterless Class-D Audio Power Amplifier with Auto-Recovery |
2.5~5.5 |
2.8 |
4 |
N/A |
1 |
0.1 |
41 |
68 |
SOP-8 |
|
|
Non-Clip, Low EMI, 2.8W Mono Filterless Class-D Audio Power Amplifier with Auto-Recovery |
2.5 ~ 5.5 |
2.8 |
4 |
N/A |
1 |
0.15 |
3.5 |
70 |
WCSP-9,TDFN-8 |
|
|
2.5W Stereo Class-D Audio Power Amplifier with 3D Enhancement |
2.5 ~ 5.5 |
2.5 |
4 |
N/A |
2 |
0.2 |
7.3 |
70 |
TQFN-24 |
|
|
3-W Mono Filterless Class-D Audio Power Amplifier |
2.5 ~ 5.5 |
3 |
4 |
N/A |
1 |
0.18 |
4.3 |
72 |
TDFN-8, WCSP |
|
|
6.5-W Mono Class-D Audio Power Amplifier |
8 ~ 24 |
6.5 |
8 |
N/A |
1 |
0.08 |
8 |
70 |
TSSOP-24 |
|
|
15-W Stereo Class-D Audio Power Amplifier with Speaker Protection |
5.5~26 |
15 |
8 |
- |
2 |
0.2 |
45 |
60 |
TSSOP-28 |
|
|
6-W Stereo Class-D Audio Power Amplifier with Speaker Protection |
5.5~26 |
6 |
8 |
N/A |
2 |
0.2 |
45mA |
60 |
TSSOP-28 |
|
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